Astudent on her way to school walks eastward in a straight line 20.0 meters towards the bus stop, but realizes she dropped her physics notebook along the way and turns around to retrace her steps. she has traveled back 18.0 meters before finding it and then runs the remaining 45.0 meters due east to the bus stop. what is her total displacement? what is her total distance traveled?

During physical science, ms. greene challenged her students to produce an energy transformation. james and jill wrapped a 4-inch nail with a coil of fifty turns of wire. they connected one end of the coil to one terminal of a knife switch. they connected the other terminal of the knife switch to the battery. finally, they connected the end of the coil to the other terminal of the battery. james held the tip of a 1-inch nail near the flat end of the 4-inch nail. jill closed the knife switch quickly and then opened it. the 1-inch nail was pulled toward the 4-inch nail. what is the best explanation of why the nail moved? a) electrical energy was converted to mechanical energy in the 1-inch nail. b) the 4-inch nail became an electromagnet and the magnetic force attracted the 1-inch nail. c) the electric current in the 4-inch nail was converted to mechanical energy in the 1-inch nail. d) the 4-inch nail had a positive charge and the 1-inch nail had a negative charge. opposites attracted.

Argon, neon, and xenon are examples of

Which situation will produce the greatest change of momentum